%0 Journal Article %A F. Bagemihl %T Rectilinearly and rectifiably ambiguous points of a function harmonic inside a sphere %J Colloquium Mathematicum %D 1985 %P 133-136 %V 50 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-50-1-133-136/ %R 10.4064/cm-50-1-133-136 %G en %F 10_4064_cm_50_1_133_136